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Solve the right triangle ABC with right angle C if B = 30° and c = 10.

Solve the right triangle ABC with right angle C if B = 30° and c = 10.-example-1
User Codysehl
by
7.4k points

1 Answer

2 votes

Explanation:

Answer:


Last choice is correct.


Explanation:


Given that ∠C=90°, ∠B=30°, c=10


We know that sum of all angles in a triangle is 180 degree.


∠A+∠B+∠C=180°


∠A+∠30°+∠90°=180°


∠A+∠120°=180°


∠A=60°


Now we can use sin or cos whichever applicable to find missing sides


2b=10


b=5


Similarly


a=8.6602


Hence last choice is correct.

User Lukasgeiter
by
8.6k points

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